Electrophotographic toner, method for producing the same, electrophotographic developer, and image forming method

摘要

An electrophotographic toner having a core-shell structure including a crystalline resin in its core region or a sea-island structure including a crystalline resin in its island region, wherein the toner has 1) a resistance of 5.0x10¹² Omega.cm or higher, 2) a dynamic viscosity coefficient of 3x10³ Pa.s or higher at a temperature which is 50° C. higher than a melting point of the crystalline resin, and 3) a dynamic viscosity coefficient of 1x10⁵ Pa.s or lower at a temperature which is 10° C. higher than the melting point of the crystalline resin.